Home / 7,275.18-10,043.55-5,678.40

Finding the Fourth Proportional to 7,275.18, 10,043.55 and 5,678.40

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Solution

The fourth proportional to 7,275.18, 10,043.55 and 5,678.40 is: 7,839.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,275.18 : 10,043.55 = 5,678.40 : x
  2. Step 2: Convert to fraction form
    7,275.18/10,043.55 = 5,678.40/x
  3. Step 3: Cross multiply
    7,275.18x = 10,043.55 × 5,678.40
  4. Step 4: Simplify right side
    7,275.18x = 57,031,294.32
  5. Step 5: Solve for x
    x = 57,031,294.32/7,275.18
  6. Step 6: Final answer
    x = 7,839.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.